(;.630.7 

no. 229 
cop.  5 


UNIVERSITY  OF 

ILLINOIS  LlgRARY 

AT  URBANA-CHAMPA!6'^ 

AGRICULf  Uf?l 


TJKoc 


ACO(  ^.^^^^"r;^^^ 


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UNIVERSITY  OF  ILLINOIS 

Agricultural  Experiment  Station 

URBANA,  SEPTEMBER,  1918 


CIRCULAR  No.  229 


Illinois  Wheat  Yields  With  Nature's 
Fertilizers 

By  CYRIL  G.  HOPKINS,  CniEr  in  Agronomy  and  Chemistry;   J.  E.  WHITCHURCH, 

F.  W.  GARRETT,  H.  P.  T.  FAHRNKOPF,  H.  C.  GILKERSON,  and  H.  J.  SNIDER 

Associates    in    Soil,    Fertility;    and    E.    E.    GLICK,    Assistant 

Note. — The  results  reported  with  no  soil  treatment  in  Tables 
1  and  2  are  the  averages  of  three  trials  on  each  field,  except  at  West 
Salem,  where  there  is  only  one  trial  on  untreated  land,  and  at  Gales- 
burg,  where  there  are  four  trials  with  some  limestone  applied. 


Table^I.— TEN  WHEAT  FIELDS  IN  "EGYPT" 

(Bushels  per  acre,  1918) 


Soil 
treat- 
ment 

En- 
field 
field 

Ewing 
field 

New-  1 
ton 
field 

Ob- 
long 
field 

Pana 
field 

Ra- 
leigh 
field 

Sparta 
field 

To- 
ledo 
field 

Union- 
ville 
field 

West 

Salem 

field 

Aver- 
age 

Began 
FuU\ 

1913 
1915 

1910 
1914 

1912 
1913 

1912 
1914 

1913 
1915 

1910 
1914 

1916 
1920 

1913 
1915 

1911 
1915 

1913 
1914 

None. 

8.4 

3.1 

.1 

8.8 

7.7 

10.9 

4.7 

6.4 

12.2 

.0 
4.5- 
8.1 
11.0 

6.2 

M.... 
ML... 
MLP., 

6.3 
12.3 
17.0 

5.4 
16.5 
21.1 

.3 

9.8 

17.7 

15.8 
22.7 
33.4 

3.2 

6.2 

11.2 

14.6 
25.9 
29.3 

7.7 
12.3 
15.3 

7.8 
14.2 
16.2 

14.2 
23.3 
24.9 

8.0 
15.1 
19.7 

R 

RL... 
RLP.. 

9.6 
19.3 
22.9 

1.5 
12.9 
18.5 

.3 
10.8 
16.7 

13.2 
30.5 
36.1 

10.4 
14.5 
19.7 

12.8 
22.3 
27.3 

5.2 
13.2 
13.0 

7.4 
14.6 
10.2 

13.3 
22.5 
26.2 

7.3^ 

7.2 

12.5 

8.1 
16.8 
20.3 

RLPK 

23.9 

21.4 

17.7 

38.8 

15.8 

24.9 

16.7 

16.7 

26.1 

18.2 

22.0 

^After  soil  treatment  is  begun  about  one  crop  rotation  is  usually  required 
to  get  the  full  treatment  underway. 

^Some  limestone  also  was  applied  to  these  two  plots  at  West  Salem. 


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Digitized  by  tine  Internet  Arciiive 

in  2011  with  funding  from 

University  of  Illinois  Urbana-Champaign 


http://www.archive.org/details/illinoiswheatyie229hopk 


^ 


UNIVERSITY  OF  ILLINOIS-URBANA 

Q.630.7IL6C  C0D5 

CIRCULAR  URBANA,  ILL. 
2291918 


0112  019535498 


